Got myself a locked out PC a few years ago, boot restrictions done via bios. Stumbled upon Bus pirate and Flashrom and decided to give it a go. SeaBios (edit) works great and flashing the bios with the bus pirate worked on first try. Didn't want to remove the chip from board so got myself some nice clipon probe kits from seeed. Thanks for everyone involved in Bus pirate and Flashrom, truly awesome piece of work.